- Infrastructure Engineering - Research Publications
Infrastructure Engineering - Research Publications
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ItemPerformance of multi-storey prefabricated modular buildings with infill concrete walls subjected to earthquake loadsGunawardena, D ; Ngo, T ; Mendis, P ; Kumar, S (Concrete Institute of Australia (CIA), 2017-09-14)Prefabricated modules are increasingly becoming popular in the construction industry as they result in achieving cost efficient buildings in a very short time. This increasing demand for modular construction has expanded to multi-storey applications where the effect of lateral loads, such as earthquake loads, becomes critical. However, there is a shortage of detailed engineering research into the performance of modular structural systems subjected to earthquake loads. This paper evaluates a modified corner supported modular structural system that uses infill concrete walls to enhance its lateral stiffness. The performance of the overall structural system against earthquake loads and the contribution of modules containing infill concrete walls to the overall lateral load resisting system is discussed in this paper.
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ItemEffective use of offsite manufacturing for public infrastructure projects in AustraliaGunawardena, D ; Mendis, P ; Ngo, D ; Rismanchi, B ; Aye, L (ICE Publishing, 2019)Prefabrication and offsite manufacturing have featured in various forms in an in-situ based construction industry for many decades. Scarcity of both human and material resources is challenging the future of traditional construction practices. Due to its many benefits such as speed of project delivery, minimum work on site, minimised construction waste and higher quality assurance, offsite manufacturing is gradually evolving into an essential technology in the construction industry. As a result of re-cent government initiatives, Australia is seeing a considerable increase in the use of offsite manufacturing and prefabricated modular technologies in delivering public infrastructure projects such as schools, healthcare facilities, and public transport facilities. Such projects are ably supported by academic research collaborating with the industry to ensure that the outcomes keep improving to achieve the highest quality and functionality. This paper discusses how multidisciplinary research addresses issues such as structural performance, construction technology, design for manufacturing and assembly and indoor environ-mental quality for the delivery of such public infrastructure projects. These projects have set an example in how offsite manufacturing supported by academic research can be beneficial for effectively delivering the greater good to the society.
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ItemAn optimum construction strategy for multi-story residential prefabricated modular buildingsThalpe Guruge, ; Samarasinghe, ; Gunawardena, ; Nguyen, T ; Mendis, P ; Ngo, T ; Aye, L (ZEMCH Network, 2018-01-29)Prefabrication is recognised as the way forward in building construction by the industry as it delivers quality yet affordable mass customisable houses faster than traditional on-site construction. The prefabrication of multi-story buildings transforms traditional construction into off-site manufacturing of repetitive components. Currently there are three main structural systems being adopted for modular multi-story buildings; 1) Building with a rigid in-situ central core to which the modules are connected, 2) A podium structure which acts as a base where modules are placed on top of it, 3) Fully modular structure with strategically placed load bearing modules. Current investigations on these systems focus on improving their benefits such as construction time, cost, safety and quality based on one variable at a time. However, there is a lack of studies with a holistic approach to identify the optimum structural system. This paper aims to define an Optimum Modular System Index (OMI) which will be based upon three main indices; Assembly cost penalty Index (ACPI), Onsite handling cost penalty Index (HCPI) and Concrete cost penalty Index (CCPI). Determination of OMI is expected to provide a framework to identify the optimum construction system for multi-story residential prefabricated modular buildings.